Loading...
1/* SPDX-License-Identifier: GPL-2.0 */
2#undef TRACE_SYSTEM
3#define TRACE_SYSTEM block
4
5#if !defined(_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
6#define _TRACE_BLOCK_H
7
8#include <linux/blktrace_api.h>
9#include <linux/blkdev.h>
10#include <linux/buffer_head.h>
11#include <linux/tracepoint.h>
12#include <uapi/linux/ioprio.h>
13
14#define RWBS_LEN 8
15
16#define IOPRIO_CLASS_STRINGS \
17 { IOPRIO_CLASS_NONE, "none" }, \
18 { IOPRIO_CLASS_RT, "rt" }, \
19 { IOPRIO_CLASS_BE, "be" }, \
20 { IOPRIO_CLASS_IDLE, "idle" }, \
21 { IOPRIO_CLASS_INVALID, "invalid"}
22
23#ifdef CONFIG_BUFFER_HEAD
24DECLARE_EVENT_CLASS(block_buffer,
25
26 TP_PROTO(struct buffer_head *bh),
27
28 TP_ARGS(bh),
29
30 TP_STRUCT__entry (
31 __field( dev_t, dev )
32 __field( sector_t, sector )
33 __field( size_t, size )
34 ),
35
36 TP_fast_assign(
37 __entry->dev = bh->b_bdev->bd_dev;
38 __entry->sector = bh->b_blocknr;
39 __entry->size = bh->b_size;
40 ),
41
42 TP_printk("%d,%d sector=%llu size=%zu",
43 MAJOR(__entry->dev), MINOR(__entry->dev),
44 (unsigned long long)__entry->sector, __entry->size
45 )
46);
47
48/**
49 * block_touch_buffer - mark a buffer accessed
50 * @bh: buffer_head being touched
51 *
52 * Called from touch_buffer().
53 */
54DEFINE_EVENT(block_buffer, block_touch_buffer,
55
56 TP_PROTO(struct buffer_head *bh),
57
58 TP_ARGS(bh)
59);
60
61/**
62 * block_dirty_buffer - mark a buffer dirty
63 * @bh: buffer_head being dirtied
64 *
65 * Called from mark_buffer_dirty().
66 */
67DEFINE_EVENT(block_buffer, block_dirty_buffer,
68
69 TP_PROTO(struct buffer_head *bh),
70
71 TP_ARGS(bh)
72);
73#endif /* CONFIG_BUFFER_HEAD */
74
75/**
76 * block_rq_requeue - place block IO request back on a queue
77 * @rq: block IO operation request
78 *
79 * The block operation request @rq is being placed back into queue
80 * @q. For some reason the request was not completed and needs to be
81 * put back in the queue.
82 */
83TRACE_EVENT(block_rq_requeue,
84
85 TP_PROTO(struct request *rq),
86
87 TP_ARGS(rq),
88
89 TP_STRUCT__entry(
90 __field( dev_t, dev )
91 __field( sector_t, sector )
92 __field( unsigned int, nr_sector )
93 __field( unsigned short, ioprio )
94 __array( char, rwbs, RWBS_LEN )
95 __dynamic_array( char, cmd, 1 )
96 ),
97
98 TP_fast_assign(
99 __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0;
100 __entry->sector = blk_rq_trace_sector(rq);
101 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
102 __entry->ioprio = req_get_ioprio(rq);
103
104 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
105 __get_str(cmd)[0] = '\0';
106 ),
107
108 TP_printk("%d,%d %s (%s) %llu + %u %s,%u,%u [%d]",
109 MAJOR(__entry->dev), MINOR(__entry->dev),
110 __entry->rwbs, __get_str(cmd),
111 (unsigned long long)__entry->sector, __entry->nr_sector,
112 __print_symbolic(IOPRIO_PRIO_CLASS(__entry->ioprio),
113 IOPRIO_CLASS_STRINGS),
114 IOPRIO_PRIO_HINT(__entry->ioprio),
115 IOPRIO_PRIO_LEVEL(__entry->ioprio), 0)
116);
117
118DECLARE_EVENT_CLASS(block_rq_completion,
119
120 TP_PROTO(struct request *rq, blk_status_t error, unsigned int nr_bytes),
121
122 TP_ARGS(rq, error, nr_bytes),
123
124 TP_STRUCT__entry(
125 __field( dev_t, dev )
126 __field( sector_t, sector )
127 __field( unsigned int, nr_sector )
128 __field( int , error )
129 __field( unsigned short, ioprio )
130 __array( char, rwbs, RWBS_LEN )
131 __dynamic_array( char, cmd, 1 )
132 ),
133
134 TP_fast_assign(
135 __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0;
136 __entry->sector = blk_rq_pos(rq);
137 __entry->nr_sector = nr_bytes >> 9;
138 __entry->error = blk_status_to_errno(error);
139 __entry->ioprio = req_get_ioprio(rq);
140
141 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
142 __get_str(cmd)[0] = '\0';
143 ),
144
145 TP_printk("%d,%d %s (%s) %llu + %u %s,%u,%u [%d]",
146 MAJOR(__entry->dev), MINOR(__entry->dev),
147 __entry->rwbs, __get_str(cmd),
148 (unsigned long long)__entry->sector, __entry->nr_sector,
149 __print_symbolic(IOPRIO_PRIO_CLASS(__entry->ioprio),
150 IOPRIO_CLASS_STRINGS),
151 IOPRIO_PRIO_HINT(__entry->ioprio),
152 IOPRIO_PRIO_LEVEL(__entry->ioprio), __entry->error)
153);
154
155/**
156 * block_rq_complete - block IO operation completed by device driver
157 * @rq: block operations request
158 * @error: status code
159 * @nr_bytes: number of completed bytes
160 *
161 * The block_rq_complete tracepoint event indicates that some portion
162 * of operation request has been completed by the device driver. If
163 * the @rq->bio is %NULL, then there is absolutely no additional work to
164 * do for the request. If @rq->bio is non-NULL then there is
165 * additional work required to complete the request.
166 */
167DEFINE_EVENT(block_rq_completion, block_rq_complete,
168
169 TP_PROTO(struct request *rq, blk_status_t error, unsigned int nr_bytes),
170
171 TP_ARGS(rq, error, nr_bytes)
172);
173
174/**
175 * block_rq_error - block IO operation error reported by device driver
176 * @rq: block operations request
177 * @error: status code
178 * @nr_bytes: number of completed bytes
179 *
180 * The block_rq_error tracepoint event indicates that some portion
181 * of operation request has failed as reported by the device driver.
182 */
183DEFINE_EVENT(block_rq_completion, block_rq_error,
184
185 TP_PROTO(struct request *rq, blk_status_t error, unsigned int nr_bytes),
186
187 TP_ARGS(rq, error, nr_bytes)
188);
189
190DECLARE_EVENT_CLASS(block_rq,
191
192 TP_PROTO(struct request *rq),
193
194 TP_ARGS(rq),
195
196 TP_STRUCT__entry(
197 __field( dev_t, dev )
198 __field( sector_t, sector )
199 __field( unsigned int, nr_sector )
200 __field( unsigned int, bytes )
201 __field( unsigned short, ioprio )
202 __array( char, rwbs, RWBS_LEN )
203 __array( char, comm, TASK_COMM_LEN )
204 __dynamic_array( char, cmd, 1 )
205 ),
206
207 TP_fast_assign(
208 __entry->dev = rq->q->disk ? disk_devt(rq->q->disk) : 0;
209 __entry->sector = blk_rq_trace_sector(rq);
210 __entry->nr_sector = blk_rq_trace_nr_sectors(rq);
211 __entry->bytes = blk_rq_bytes(rq);
212 __entry->ioprio = req_get_ioprio(rq);
213
214 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
215 __get_str(cmd)[0] = '\0';
216 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
217 ),
218
219 TP_printk("%d,%d %s %u (%s) %llu + %u %s,%u,%u [%s]",
220 MAJOR(__entry->dev), MINOR(__entry->dev),
221 __entry->rwbs, __entry->bytes, __get_str(cmd),
222 (unsigned long long)__entry->sector, __entry->nr_sector,
223 __print_symbolic(IOPRIO_PRIO_CLASS(__entry->ioprio),
224 IOPRIO_CLASS_STRINGS),
225 IOPRIO_PRIO_HINT(__entry->ioprio),
226 IOPRIO_PRIO_LEVEL(__entry->ioprio), __entry->comm)
227);
228
229/**
230 * block_rq_insert - insert block operation request into queue
231 * @rq: block IO operation request
232 *
233 * Called immediately before block operation request @rq is inserted
234 * into queue @q. The fields in the operation request @rq struct can
235 * be examined to determine which device and sectors the pending
236 * operation would access.
237 */
238DEFINE_EVENT(block_rq, block_rq_insert,
239
240 TP_PROTO(struct request *rq),
241
242 TP_ARGS(rq)
243);
244
245/**
246 * block_rq_issue - issue pending block IO request operation to device driver
247 * @rq: block IO operation request
248 *
249 * Called when block operation request @rq from queue @q is sent to a
250 * device driver for processing.
251 */
252DEFINE_EVENT(block_rq, block_rq_issue,
253
254 TP_PROTO(struct request *rq),
255
256 TP_ARGS(rq)
257);
258
259/**
260 * block_rq_merge - merge request with another one in the elevator
261 * @rq: block IO operation request
262 *
263 * Called when block operation request @rq from queue @q is merged to another
264 * request queued in the elevator.
265 */
266DEFINE_EVENT(block_rq, block_rq_merge,
267
268 TP_PROTO(struct request *rq),
269
270 TP_ARGS(rq)
271);
272
273/**
274 * block_io_start - insert a request for execution
275 * @rq: block IO operation request
276 *
277 * Called when block operation request @rq is queued for execution
278 */
279DEFINE_EVENT(block_rq, block_io_start,
280
281 TP_PROTO(struct request *rq),
282
283 TP_ARGS(rq)
284);
285
286/**
287 * block_io_done - block IO operation request completed
288 * @rq: block IO operation request
289 *
290 * Called when block operation request @rq is completed
291 */
292DEFINE_EVENT(block_rq, block_io_done,
293
294 TP_PROTO(struct request *rq),
295
296 TP_ARGS(rq)
297);
298
299/**
300 * block_bio_complete - completed all work on the block operation
301 * @q: queue holding the block operation
302 * @bio: block operation completed
303 *
304 * This tracepoint indicates there is no further work to do on this
305 * block IO operation @bio.
306 */
307TRACE_EVENT(block_bio_complete,
308
309 TP_PROTO(struct request_queue *q, struct bio *bio),
310
311 TP_ARGS(q, bio),
312
313 TP_STRUCT__entry(
314 __field( dev_t, dev )
315 __field( sector_t, sector )
316 __field( unsigned, nr_sector )
317 __field( int, error )
318 __array( char, rwbs, RWBS_LEN)
319 ),
320
321 TP_fast_assign(
322 __entry->dev = bio_dev(bio);
323 __entry->sector = bio->bi_iter.bi_sector;
324 __entry->nr_sector = bio_sectors(bio);
325 __entry->error = blk_status_to_errno(bio->bi_status);
326 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
327 ),
328
329 TP_printk("%d,%d %s %llu + %u [%d]",
330 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
331 (unsigned long long)__entry->sector,
332 __entry->nr_sector, __entry->error)
333);
334
335DECLARE_EVENT_CLASS(block_bio,
336
337 TP_PROTO(struct bio *bio),
338
339 TP_ARGS(bio),
340
341 TP_STRUCT__entry(
342 __field( dev_t, dev )
343 __field( sector_t, sector )
344 __field( unsigned int, nr_sector )
345 __array( char, rwbs, RWBS_LEN )
346 __array( char, comm, TASK_COMM_LEN )
347 ),
348
349 TP_fast_assign(
350 __entry->dev = bio_dev(bio);
351 __entry->sector = bio->bi_iter.bi_sector;
352 __entry->nr_sector = bio_sectors(bio);
353 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
354 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
355 ),
356
357 TP_printk("%d,%d %s %llu + %u [%s]",
358 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
359 (unsigned long long)__entry->sector,
360 __entry->nr_sector, __entry->comm)
361);
362
363/**
364 * block_bio_bounce - used bounce buffer when processing block operation
365 * @bio: block operation
366 *
367 * A bounce buffer was used to handle the block operation @bio in @q.
368 * This occurs when hardware limitations prevent a direct transfer of
369 * data between the @bio data memory area and the IO device. Use of a
370 * bounce buffer requires extra copying of data and decreases
371 * performance.
372 */
373DEFINE_EVENT(block_bio, block_bio_bounce,
374 TP_PROTO(struct bio *bio),
375 TP_ARGS(bio)
376);
377
378/**
379 * block_bio_backmerge - merging block operation to the end of an existing operation
380 * @bio: new block operation to merge
381 *
382 * Merging block request @bio to the end of an existing block request.
383 */
384DEFINE_EVENT(block_bio, block_bio_backmerge,
385 TP_PROTO(struct bio *bio),
386 TP_ARGS(bio)
387);
388
389/**
390 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
391 * @bio: new block operation to merge
392 *
393 * Merging block IO operation @bio to the beginning of an existing block request.
394 */
395DEFINE_EVENT(block_bio, block_bio_frontmerge,
396 TP_PROTO(struct bio *bio),
397 TP_ARGS(bio)
398);
399
400/**
401 * block_bio_queue - putting new block IO operation in queue
402 * @bio: new block operation
403 *
404 * About to place the block IO operation @bio into queue @q.
405 */
406DEFINE_EVENT(block_bio, block_bio_queue,
407 TP_PROTO(struct bio *bio),
408 TP_ARGS(bio)
409);
410
411/**
412 * block_getrq - get a free request entry in queue for block IO operations
413 * @bio: pending block IO operation (can be %NULL)
414 *
415 * A request struct has been allocated to handle the block IO operation @bio.
416 */
417DEFINE_EVENT(block_bio, block_getrq,
418 TP_PROTO(struct bio *bio),
419 TP_ARGS(bio)
420);
421
422/**
423 * block_plug - keep operations requests in request queue
424 * @q: request queue to plug
425 *
426 * Plug the request queue @q. Do not allow block operation requests
427 * to be sent to the device driver. Instead, accumulate requests in
428 * the queue to improve throughput performance of the block device.
429 */
430TRACE_EVENT(block_plug,
431
432 TP_PROTO(struct request_queue *q),
433
434 TP_ARGS(q),
435
436 TP_STRUCT__entry(
437 __array( char, comm, TASK_COMM_LEN )
438 ),
439
440 TP_fast_assign(
441 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
442 ),
443
444 TP_printk("[%s]", __entry->comm)
445);
446
447DECLARE_EVENT_CLASS(block_unplug,
448
449 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
450
451 TP_ARGS(q, depth, explicit),
452
453 TP_STRUCT__entry(
454 __field( int, nr_rq )
455 __array( char, comm, TASK_COMM_LEN )
456 ),
457
458 TP_fast_assign(
459 __entry->nr_rq = depth;
460 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
461 ),
462
463 TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
464);
465
466/**
467 * block_unplug - release of operations requests in request queue
468 * @q: request queue to unplug
469 * @depth: number of requests just added to the queue
470 * @explicit: whether this was an explicit unplug, or one from schedule()
471 *
472 * Unplug request queue @q because device driver is scheduled to work
473 * on elements in the request queue.
474 */
475DEFINE_EVENT(block_unplug, block_unplug,
476
477 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
478
479 TP_ARGS(q, depth, explicit)
480);
481
482/**
483 * block_split - split a single bio struct into two bio structs
484 * @bio: block operation being split
485 * @new_sector: The starting sector for the new bio
486 *
487 * The bio request @bio needs to be split into two bio requests. The newly
488 * created @bio request starts at @new_sector. This split may be required due to
489 * hardware limitations such as operation crossing device boundaries in a RAID
490 * system.
491 */
492TRACE_EVENT(block_split,
493
494 TP_PROTO(struct bio *bio, unsigned int new_sector),
495
496 TP_ARGS(bio, new_sector),
497
498 TP_STRUCT__entry(
499 __field( dev_t, dev )
500 __field( sector_t, sector )
501 __field( sector_t, new_sector )
502 __array( char, rwbs, RWBS_LEN )
503 __array( char, comm, TASK_COMM_LEN )
504 ),
505
506 TP_fast_assign(
507 __entry->dev = bio_dev(bio);
508 __entry->sector = bio->bi_iter.bi_sector;
509 __entry->new_sector = new_sector;
510 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
511 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
512 ),
513
514 TP_printk("%d,%d %s %llu / %llu [%s]",
515 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
516 (unsigned long long)__entry->sector,
517 (unsigned long long)__entry->new_sector,
518 __entry->comm)
519);
520
521/**
522 * block_bio_remap - map request for a logical device to the raw device
523 * @bio: revised operation
524 * @dev: original device for the operation
525 * @from: original sector for the operation
526 *
527 * An operation for a logical device has been mapped to the
528 * raw block device.
529 */
530TRACE_EVENT(block_bio_remap,
531
532 TP_PROTO(struct bio *bio, dev_t dev, sector_t from),
533
534 TP_ARGS(bio, dev, from),
535
536 TP_STRUCT__entry(
537 __field( dev_t, dev )
538 __field( sector_t, sector )
539 __field( unsigned int, nr_sector )
540 __field( dev_t, old_dev )
541 __field( sector_t, old_sector )
542 __array( char, rwbs, RWBS_LEN)
543 ),
544
545 TP_fast_assign(
546 __entry->dev = bio_dev(bio);
547 __entry->sector = bio->bi_iter.bi_sector;
548 __entry->nr_sector = bio_sectors(bio);
549 __entry->old_dev = dev;
550 __entry->old_sector = from;
551 blk_fill_rwbs(__entry->rwbs, bio->bi_opf);
552 ),
553
554 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
555 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
556 (unsigned long long)__entry->sector,
557 __entry->nr_sector,
558 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
559 (unsigned long long)__entry->old_sector)
560);
561
562/**
563 * block_rq_remap - map request for a block operation request
564 * @rq: block IO operation request
565 * @dev: device for the operation
566 * @from: original sector for the operation
567 *
568 * The block operation request @rq in @q has been remapped. The block
569 * operation request @rq holds the current information and @from hold
570 * the original sector.
571 */
572TRACE_EVENT(block_rq_remap,
573
574 TP_PROTO(struct request *rq, dev_t dev, sector_t from),
575
576 TP_ARGS(rq, dev, from),
577
578 TP_STRUCT__entry(
579 __field( dev_t, dev )
580 __field( sector_t, sector )
581 __field( unsigned int, nr_sector )
582 __field( dev_t, old_dev )
583 __field( sector_t, old_sector )
584 __field( unsigned int, nr_bios )
585 __array( char, rwbs, RWBS_LEN)
586 ),
587
588 TP_fast_assign(
589 __entry->dev = disk_devt(rq->q->disk);
590 __entry->sector = blk_rq_pos(rq);
591 __entry->nr_sector = blk_rq_sectors(rq);
592 __entry->old_dev = dev;
593 __entry->old_sector = from;
594 __entry->nr_bios = blk_rq_count_bios(rq);
595 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags);
596 ),
597
598 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
599 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
600 (unsigned long long)__entry->sector,
601 __entry->nr_sector,
602 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
603 (unsigned long long)__entry->old_sector, __entry->nr_bios)
604);
605
606#endif /* _TRACE_BLOCK_H */
607
608/* This part must be outside protection */
609#include <trace/define_trace.h>
610
1#undef TRACE_SYSTEM
2#define TRACE_SYSTEM block
3
4#if !defined(_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
5#define _TRACE_BLOCK_H
6
7#include <linux/blktrace_api.h>
8#include <linux/blkdev.h>
9#include <linux/buffer_head.h>
10#include <linux/tracepoint.h>
11
12#define RWBS_LEN 8
13
14DECLARE_EVENT_CLASS(block_buffer,
15
16 TP_PROTO(struct buffer_head *bh),
17
18 TP_ARGS(bh),
19
20 TP_STRUCT__entry (
21 __field( dev_t, dev )
22 __field( sector_t, sector )
23 __field( size_t, size )
24 ),
25
26 TP_fast_assign(
27 __entry->dev = bh->b_bdev->bd_dev;
28 __entry->sector = bh->b_blocknr;
29 __entry->size = bh->b_size;
30 ),
31
32 TP_printk("%d,%d sector=%llu size=%zu",
33 MAJOR(__entry->dev), MINOR(__entry->dev),
34 (unsigned long long)__entry->sector, __entry->size
35 )
36);
37
38/**
39 * block_touch_buffer - mark a buffer accessed
40 * @bh: buffer_head being touched
41 *
42 * Called from touch_buffer().
43 */
44DEFINE_EVENT(block_buffer, block_touch_buffer,
45
46 TP_PROTO(struct buffer_head *bh),
47
48 TP_ARGS(bh)
49);
50
51/**
52 * block_dirty_buffer - mark a buffer dirty
53 * @bh: buffer_head being dirtied
54 *
55 * Called from mark_buffer_dirty().
56 */
57DEFINE_EVENT(block_buffer, block_dirty_buffer,
58
59 TP_PROTO(struct buffer_head *bh),
60
61 TP_ARGS(bh)
62);
63
64DECLARE_EVENT_CLASS(block_rq_with_error,
65
66 TP_PROTO(struct request_queue *q, struct request *rq),
67
68 TP_ARGS(q, rq),
69
70 TP_STRUCT__entry(
71 __field( dev_t, dev )
72 __field( sector_t, sector )
73 __field( unsigned int, nr_sector )
74 __field( int, errors )
75 __array( char, rwbs, RWBS_LEN )
76 __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
77 ),
78
79 TP_fast_assign(
80 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
81 __entry->sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
82 0 : blk_rq_pos(rq);
83 __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
84 0 : blk_rq_sectors(rq);
85 __entry->errors = rq->errors;
86
87 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
88 blk_dump_cmd(__get_str(cmd), rq);
89 ),
90
91 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
92 MAJOR(__entry->dev), MINOR(__entry->dev),
93 __entry->rwbs, __get_str(cmd),
94 (unsigned long long)__entry->sector,
95 __entry->nr_sector, __entry->errors)
96);
97
98/**
99 * block_rq_abort - abort block operation request
100 * @q: queue containing the block operation request
101 * @rq: block IO operation request
102 *
103 * Called immediately after pending block IO operation request @rq in
104 * queue @q is aborted. The fields in the operation request @rq
105 * can be examined to determine which device and sectors the pending
106 * operation would access.
107 */
108DEFINE_EVENT(block_rq_with_error, block_rq_abort,
109
110 TP_PROTO(struct request_queue *q, struct request *rq),
111
112 TP_ARGS(q, rq)
113);
114
115/**
116 * block_rq_requeue - place block IO request back on a queue
117 * @q: queue holding operation
118 * @rq: block IO operation request
119 *
120 * The block operation request @rq is being placed back into queue
121 * @q. For some reason the request was not completed and needs to be
122 * put back in the queue.
123 */
124DEFINE_EVENT(block_rq_with_error, block_rq_requeue,
125
126 TP_PROTO(struct request_queue *q, struct request *rq),
127
128 TP_ARGS(q, rq)
129);
130
131/**
132 * block_rq_complete - block IO operation completed by device driver
133 * @q: queue containing the block operation request
134 * @rq: block operations request
135 * @nr_bytes: number of completed bytes
136 *
137 * The block_rq_complete tracepoint event indicates that some portion
138 * of operation request has been completed by the device driver. If
139 * the @rq->bio is %NULL, then there is absolutely no additional work to
140 * do for the request. If @rq->bio is non-NULL then there is
141 * additional work required to complete the request.
142 */
143TRACE_EVENT(block_rq_complete,
144
145 TP_PROTO(struct request_queue *q, struct request *rq,
146 unsigned int nr_bytes),
147
148 TP_ARGS(q, rq, nr_bytes),
149
150 TP_STRUCT__entry(
151 __field( dev_t, dev )
152 __field( sector_t, sector )
153 __field( unsigned int, nr_sector )
154 __field( int, errors )
155 __array( char, rwbs, RWBS_LEN )
156 __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
157 ),
158
159 TP_fast_assign(
160 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
161 __entry->sector = blk_rq_pos(rq);
162 __entry->nr_sector = nr_bytes >> 9;
163 __entry->errors = rq->errors;
164
165 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes);
166 blk_dump_cmd(__get_str(cmd), rq);
167 ),
168
169 TP_printk("%d,%d %s (%s) %llu + %u [%d]",
170 MAJOR(__entry->dev), MINOR(__entry->dev),
171 __entry->rwbs, __get_str(cmd),
172 (unsigned long long)__entry->sector,
173 __entry->nr_sector, __entry->errors)
174);
175
176DECLARE_EVENT_CLASS(block_rq,
177
178 TP_PROTO(struct request_queue *q, struct request *rq),
179
180 TP_ARGS(q, rq),
181
182 TP_STRUCT__entry(
183 __field( dev_t, dev )
184 __field( sector_t, sector )
185 __field( unsigned int, nr_sector )
186 __field( unsigned int, bytes )
187 __array( char, rwbs, RWBS_LEN )
188 __array( char, comm, TASK_COMM_LEN )
189 __dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
190 ),
191
192 TP_fast_assign(
193 __entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
194 __entry->sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
195 0 : blk_rq_pos(rq);
196 __entry->nr_sector = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
197 0 : blk_rq_sectors(rq);
198 __entry->bytes = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
199 blk_rq_bytes(rq) : 0;
200
201 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
202 blk_dump_cmd(__get_str(cmd), rq);
203 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
204 ),
205
206 TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
207 MAJOR(__entry->dev), MINOR(__entry->dev),
208 __entry->rwbs, __entry->bytes, __get_str(cmd),
209 (unsigned long long)__entry->sector,
210 __entry->nr_sector, __entry->comm)
211);
212
213/**
214 * block_rq_insert - insert block operation request into queue
215 * @q: target queue
216 * @rq: block IO operation request
217 *
218 * Called immediately before block operation request @rq is inserted
219 * into queue @q. The fields in the operation request @rq struct can
220 * be examined to determine which device and sectors the pending
221 * operation would access.
222 */
223DEFINE_EVENT(block_rq, block_rq_insert,
224
225 TP_PROTO(struct request_queue *q, struct request *rq),
226
227 TP_ARGS(q, rq)
228);
229
230/**
231 * block_rq_issue - issue pending block IO request operation to device driver
232 * @q: queue holding operation
233 * @rq: block IO operation operation request
234 *
235 * Called when block operation request @rq from queue @q is sent to a
236 * device driver for processing.
237 */
238DEFINE_EVENT(block_rq, block_rq_issue,
239
240 TP_PROTO(struct request_queue *q, struct request *rq),
241
242 TP_ARGS(q, rq)
243);
244
245/**
246 * block_bio_bounce - used bounce buffer when processing block operation
247 * @q: queue holding the block operation
248 * @bio: block operation
249 *
250 * A bounce buffer was used to handle the block operation @bio in @q.
251 * This occurs when hardware limitations prevent a direct transfer of
252 * data between the @bio data memory area and the IO device. Use of a
253 * bounce buffer requires extra copying of data and decreases
254 * performance.
255 */
256TRACE_EVENT(block_bio_bounce,
257
258 TP_PROTO(struct request_queue *q, struct bio *bio),
259
260 TP_ARGS(q, bio),
261
262 TP_STRUCT__entry(
263 __field( dev_t, dev )
264 __field( sector_t, sector )
265 __field( unsigned int, nr_sector )
266 __array( char, rwbs, RWBS_LEN )
267 __array( char, comm, TASK_COMM_LEN )
268 ),
269
270 TP_fast_assign(
271 __entry->dev = bio->bi_bdev ?
272 bio->bi_bdev->bd_dev : 0;
273 __entry->sector = bio->bi_iter.bi_sector;
274 __entry->nr_sector = bio_sectors(bio);
275 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
276 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
277 ),
278
279 TP_printk("%d,%d %s %llu + %u [%s]",
280 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
281 (unsigned long long)__entry->sector,
282 __entry->nr_sector, __entry->comm)
283);
284
285/**
286 * block_bio_complete - completed all work on the block operation
287 * @q: queue holding the block operation
288 * @bio: block operation completed
289 * @error: io error value
290 *
291 * This tracepoint indicates there is no further work to do on this
292 * block IO operation @bio.
293 */
294TRACE_EVENT(block_bio_complete,
295
296 TP_PROTO(struct request_queue *q, struct bio *bio, int error),
297
298 TP_ARGS(q, bio, error),
299
300 TP_STRUCT__entry(
301 __field( dev_t, dev )
302 __field( sector_t, sector )
303 __field( unsigned, nr_sector )
304 __field( int, error )
305 __array( char, rwbs, RWBS_LEN)
306 ),
307
308 TP_fast_assign(
309 __entry->dev = bio->bi_bdev->bd_dev;
310 __entry->sector = bio->bi_iter.bi_sector;
311 __entry->nr_sector = bio_sectors(bio);
312 __entry->error = error;
313 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
314 ),
315
316 TP_printk("%d,%d %s %llu + %u [%d]",
317 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
318 (unsigned long long)__entry->sector,
319 __entry->nr_sector, __entry->error)
320);
321
322DECLARE_EVENT_CLASS(block_bio_merge,
323
324 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
325
326 TP_ARGS(q, rq, bio),
327
328 TP_STRUCT__entry(
329 __field( dev_t, dev )
330 __field( sector_t, sector )
331 __field( unsigned int, nr_sector )
332 __array( char, rwbs, RWBS_LEN )
333 __array( char, comm, TASK_COMM_LEN )
334 ),
335
336 TP_fast_assign(
337 __entry->dev = bio->bi_bdev->bd_dev;
338 __entry->sector = bio->bi_iter.bi_sector;
339 __entry->nr_sector = bio_sectors(bio);
340 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
341 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
342 ),
343
344 TP_printk("%d,%d %s %llu + %u [%s]",
345 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
346 (unsigned long long)__entry->sector,
347 __entry->nr_sector, __entry->comm)
348);
349
350/**
351 * block_bio_backmerge - merging block operation to the end of an existing operation
352 * @q: queue holding operation
353 * @rq: request bio is being merged into
354 * @bio: new block operation to merge
355 *
356 * Merging block request @bio to the end of an existing block request
357 * in queue @q.
358 */
359DEFINE_EVENT(block_bio_merge, block_bio_backmerge,
360
361 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
362
363 TP_ARGS(q, rq, bio)
364);
365
366/**
367 * block_bio_frontmerge - merging block operation to the beginning of an existing operation
368 * @q: queue holding operation
369 * @rq: request bio is being merged into
370 * @bio: new block operation to merge
371 *
372 * Merging block IO operation @bio to the beginning of an existing block
373 * operation in queue @q.
374 */
375DEFINE_EVENT(block_bio_merge, block_bio_frontmerge,
376
377 TP_PROTO(struct request_queue *q, struct request *rq, struct bio *bio),
378
379 TP_ARGS(q, rq, bio)
380);
381
382/**
383 * block_bio_queue - putting new block IO operation in queue
384 * @q: queue holding operation
385 * @bio: new block operation
386 *
387 * About to place the block IO operation @bio into queue @q.
388 */
389TRACE_EVENT(block_bio_queue,
390
391 TP_PROTO(struct request_queue *q, struct bio *bio),
392
393 TP_ARGS(q, bio),
394
395 TP_STRUCT__entry(
396 __field( dev_t, dev )
397 __field( sector_t, sector )
398 __field( unsigned int, nr_sector )
399 __array( char, rwbs, RWBS_LEN )
400 __array( char, comm, TASK_COMM_LEN )
401 ),
402
403 TP_fast_assign(
404 __entry->dev = bio->bi_bdev->bd_dev;
405 __entry->sector = bio->bi_iter.bi_sector;
406 __entry->nr_sector = bio_sectors(bio);
407 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
408 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
409 ),
410
411 TP_printk("%d,%d %s %llu + %u [%s]",
412 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
413 (unsigned long long)__entry->sector,
414 __entry->nr_sector, __entry->comm)
415);
416
417DECLARE_EVENT_CLASS(block_get_rq,
418
419 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
420
421 TP_ARGS(q, bio, rw),
422
423 TP_STRUCT__entry(
424 __field( dev_t, dev )
425 __field( sector_t, sector )
426 __field( unsigned int, nr_sector )
427 __array( char, rwbs, RWBS_LEN )
428 __array( char, comm, TASK_COMM_LEN )
429 ),
430
431 TP_fast_assign(
432 __entry->dev = bio ? bio->bi_bdev->bd_dev : 0;
433 __entry->sector = bio ? bio->bi_iter.bi_sector : 0;
434 __entry->nr_sector = bio ? bio_sectors(bio) : 0;
435 blk_fill_rwbs(__entry->rwbs,
436 bio ? bio->bi_rw : 0, __entry->nr_sector);
437 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
438 ),
439
440 TP_printk("%d,%d %s %llu + %u [%s]",
441 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
442 (unsigned long long)__entry->sector,
443 __entry->nr_sector, __entry->comm)
444);
445
446/**
447 * block_getrq - get a free request entry in queue for block IO operations
448 * @q: queue for operations
449 * @bio: pending block IO operation
450 * @rw: low bit indicates a read (%0) or a write (%1)
451 *
452 * A request struct for queue @q has been allocated to handle the
453 * block IO operation @bio.
454 */
455DEFINE_EVENT(block_get_rq, block_getrq,
456
457 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
458
459 TP_ARGS(q, bio, rw)
460);
461
462/**
463 * block_sleeprq - waiting to get a free request entry in queue for block IO operation
464 * @q: queue for operation
465 * @bio: pending block IO operation
466 * @rw: low bit indicates a read (%0) or a write (%1)
467 *
468 * In the case where a request struct cannot be provided for queue @q
469 * the process needs to wait for an request struct to become
470 * available. This tracepoint event is generated each time the
471 * process goes to sleep waiting for request struct become available.
472 */
473DEFINE_EVENT(block_get_rq, block_sleeprq,
474
475 TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
476
477 TP_ARGS(q, bio, rw)
478);
479
480/**
481 * block_plug - keep operations requests in request queue
482 * @q: request queue to plug
483 *
484 * Plug the request queue @q. Do not allow block operation requests
485 * to be sent to the device driver. Instead, accumulate requests in
486 * the queue to improve throughput performance of the block device.
487 */
488TRACE_EVENT(block_plug,
489
490 TP_PROTO(struct request_queue *q),
491
492 TP_ARGS(q),
493
494 TP_STRUCT__entry(
495 __array( char, comm, TASK_COMM_LEN )
496 ),
497
498 TP_fast_assign(
499 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
500 ),
501
502 TP_printk("[%s]", __entry->comm)
503);
504
505DECLARE_EVENT_CLASS(block_unplug,
506
507 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
508
509 TP_ARGS(q, depth, explicit),
510
511 TP_STRUCT__entry(
512 __field( int, nr_rq )
513 __array( char, comm, TASK_COMM_LEN )
514 ),
515
516 TP_fast_assign(
517 __entry->nr_rq = depth;
518 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
519 ),
520
521 TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
522);
523
524/**
525 * block_unplug - release of operations requests in request queue
526 * @q: request queue to unplug
527 * @depth: number of requests just added to the queue
528 * @explicit: whether this was an explicit unplug, or one from schedule()
529 *
530 * Unplug request queue @q because device driver is scheduled to work
531 * on elements in the request queue.
532 */
533DEFINE_EVENT(block_unplug, block_unplug,
534
535 TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
536
537 TP_ARGS(q, depth, explicit)
538);
539
540/**
541 * block_split - split a single bio struct into two bio structs
542 * @q: queue containing the bio
543 * @bio: block operation being split
544 * @new_sector: The starting sector for the new bio
545 *
546 * The bio request @bio in request queue @q needs to be split into two
547 * bio requests. The newly created @bio request starts at
548 * @new_sector. This split may be required due to hardware limitation
549 * such as operation crossing device boundaries in a RAID system.
550 */
551TRACE_EVENT(block_split,
552
553 TP_PROTO(struct request_queue *q, struct bio *bio,
554 unsigned int new_sector),
555
556 TP_ARGS(q, bio, new_sector),
557
558 TP_STRUCT__entry(
559 __field( dev_t, dev )
560 __field( sector_t, sector )
561 __field( sector_t, new_sector )
562 __array( char, rwbs, RWBS_LEN )
563 __array( char, comm, TASK_COMM_LEN )
564 ),
565
566 TP_fast_assign(
567 __entry->dev = bio->bi_bdev->bd_dev;
568 __entry->sector = bio->bi_iter.bi_sector;
569 __entry->new_sector = new_sector;
570 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
571 memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
572 ),
573
574 TP_printk("%d,%d %s %llu / %llu [%s]",
575 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
576 (unsigned long long)__entry->sector,
577 (unsigned long long)__entry->new_sector,
578 __entry->comm)
579);
580
581/**
582 * block_bio_remap - map request for a logical device to the raw device
583 * @q: queue holding the operation
584 * @bio: revised operation
585 * @dev: device for the operation
586 * @from: original sector for the operation
587 *
588 * An operation for a logical device has been mapped to the
589 * raw block device.
590 */
591TRACE_EVENT(block_bio_remap,
592
593 TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
594 sector_t from),
595
596 TP_ARGS(q, bio, dev, from),
597
598 TP_STRUCT__entry(
599 __field( dev_t, dev )
600 __field( sector_t, sector )
601 __field( unsigned int, nr_sector )
602 __field( dev_t, old_dev )
603 __field( sector_t, old_sector )
604 __array( char, rwbs, RWBS_LEN)
605 ),
606
607 TP_fast_assign(
608 __entry->dev = bio->bi_bdev->bd_dev;
609 __entry->sector = bio->bi_iter.bi_sector;
610 __entry->nr_sector = bio_sectors(bio);
611 __entry->old_dev = dev;
612 __entry->old_sector = from;
613 blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
614 ),
615
616 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
617 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
618 (unsigned long long)__entry->sector,
619 __entry->nr_sector,
620 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
621 (unsigned long long)__entry->old_sector)
622);
623
624/**
625 * block_rq_remap - map request for a block operation request
626 * @q: queue holding the operation
627 * @rq: block IO operation request
628 * @dev: device for the operation
629 * @from: original sector for the operation
630 *
631 * The block operation request @rq in @q has been remapped. The block
632 * operation request @rq holds the current information and @from hold
633 * the original sector.
634 */
635TRACE_EVENT(block_rq_remap,
636
637 TP_PROTO(struct request_queue *q, struct request *rq, dev_t dev,
638 sector_t from),
639
640 TP_ARGS(q, rq, dev, from),
641
642 TP_STRUCT__entry(
643 __field( dev_t, dev )
644 __field( sector_t, sector )
645 __field( unsigned int, nr_sector )
646 __field( dev_t, old_dev )
647 __field( sector_t, old_sector )
648 __field( unsigned int, nr_bios )
649 __array( char, rwbs, RWBS_LEN)
650 ),
651
652 TP_fast_assign(
653 __entry->dev = disk_devt(rq->rq_disk);
654 __entry->sector = blk_rq_pos(rq);
655 __entry->nr_sector = blk_rq_sectors(rq);
656 __entry->old_dev = dev;
657 __entry->old_sector = from;
658 __entry->nr_bios = blk_rq_count_bios(rq);
659 blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
660 ),
661
662 TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
663 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
664 (unsigned long long)__entry->sector,
665 __entry->nr_sector,
666 MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
667 (unsigned long long)__entry->old_sector, __entry->nr_bios)
668);
669
670#endif /* _TRACE_BLOCK_H */
671
672/* This part must be outside protection */
673#include <trace/define_trace.h>
674